itunes video

I'm new here and I thank you all for the great site and the info provided here. I have a pretty simple question - Everyone is talking about encoding videos from dvd's that they already have, but I want to know if I can use videos that I bought from the itunes store on my Droid?
Not much sense for me to encode a movie for my Droid that I've already seen, but being able to load a new flick on there would be great.